1 Big Sustainable Island

Contact Us

Questions? Curiosities? Island ideas? Let's talk about Annabessacook Lake in Monmouth, Maine — near Winthrop.

Quick Answer: Call, email, or use the contact form to reach 1BSI about stays, availability, and island visits.

1 Big Sustainable Island

For reservations, availability, or general island wondering, reach out anytime. Whether you're planning a stay, dreaming up a visit, or just need a little clarity before you unplug, we're happy to help.

We look forward to connecting — and hopefully welcoming you to island time soon.

Helpful Guides

Contact - Quick FAQs

How can I reach 1BSI?

You can call us at 207-512-2524, email through the form on this page, or find our address and directions.

Can I inquire about availability here?

Yes - use this page to ask about availability, ask booking questions, or plan your visit.